<div dir="ltr"><p class="MsoNormal" style="margin:0in;font-size:11pt;font-family:Calibri,sans-serif">Hi Team,</p><p class="MsoNormal" style="margin:0in;font-size:11pt;font-family:Calibri,sans-serif"><span style="font-size:11pt"><br></span></p><p class="MsoNormal" style="margin:0in;font-size:11pt;font-family:Calibri,sans-serif"><span style="font-size:11pt">A crash is observed on  MLX5 device  while 
fetching stats "mlx5_stats_get"  , looks like </span><b style="font-size:11pt">ibv_context</b><span style="font-size:11pt">
 is getting corrupted  ( ibctx=0x1ede838800001e)</span><br></p>

<p class="MsoNormal" style="margin:0in;font-size:11pt;font-family:Calibri,sans-serif"> </p><p class="MsoNormal" style="margin:0in;font-size:11pt;font-family:Calibri,sans-serif"><span style="font-size:11pt">We do access the stats from multiple threads  simultaneously
, does this create any issue ?</span></p>

<p class="MsoNormal" style="margin:0in;font-size:11pt;font-family:Calibri,sans-serif"> </p>

<p class="MsoNormal" style="margin:0in;font-size:11pt;font-family:Calibri,sans-serif">Platform details:</p>

<p class="MsoNormal" style="margin:0in;font-size:11pt;font-family:Calibri,sans-serif"> </p>

<p class="MsoNormal" style="margin:0in;font-size:11pt;font-family:Calibri,sans-serif">Platform     
:     VM</p>

<p class="MsoNormal" style="margin:0in;font-size:11pt;font-family:Calibri,sans-serif">Hypervisor    :     Linux
KVM</p>

<p class="MsoNormal" style="margin:0in;font-size:11pt;font-family:Calibri,sans-serif">Cloud        
:     None</p>

<p class="MsoNormal" style="margin:0in;font-size:11pt;font-family:Calibri,sans-serif">Application   :     64-bit</p>

<p class="MsoNormal" style="margin:0in;font-size:11pt;font-family:Calibri,sans-serif">Datapath     
:     DPDK</p>

<p class="MsoNormal" style="margin:0in;font-size:11pt;font-family:Calibri,sans-serif">DPDK : dpdk-22.11.1</p>

<p class="MsoNormal" style="margin:0in;font-size:11pt;font-family:Calibri,sans-serif">Library : libmlx5-rdmav34.so</p>

<p class="MsoNormal" style="margin:0in;font-size:11pt;font-family:Calibri,sans-serif"> </p>

<p class="MsoNormal" style="margin:0in;font-size:11pt;font-family:Calibri,sans-serif"> </p>

<p class="MsoNormal" style="margin:0in;font-size:11pt;font-family:Calibri,sans-serif">Program terminated with signal 11, Segmentation fault.</p>

<p class="MsoNormal" style="margin:0in;font-size:11pt;font-family:Calibri,sans-serif">#0  0x00007ffff0114c83 in mlx5_get_dv_ops
(ibctx=0x1ede838800001e) at ../providers/mlx5/mlx5.c:2734</p>

<p class="MsoNormal" style="margin:0in;font-size:11pt;font-family:Calibri,sans-serif">2734    ../providers/mlx5/mlx5.c: No such
file or directory.</p>

<p class="MsoNormal" style="margin:0in;font-size:11pt;font-family:Calibri,sans-serif">(gdb) bt</p>

<p class="MsoNormal" style="margin:0in;font-size:11pt;font-family:Calibri,sans-serif">#0  0x00007ffff0114c83 in mlx5_get_dv_ops
(ibctx=0x1ede838800001e) at ../providers/mlx5/mlx5.c:2734</p>

<p class="MsoNormal" style="margin:0in;font-size:11pt;font-family:Calibri,sans-serif">#1  0x00007ffff012f378 in mlx5dv_devx_obj_query
(obj=0x27cabd0 <SipMedia::SipMedia(SipMedia const&)+1120>,
in=0x7fffa6badb20, inlen=32, out=0x7fffa6badb40, outlen=1024)</p>

<p class="MsoNormal" style="margin:0in;font-size:11pt;font-family:Calibri,sans-serif">    at ../providers/mlx5/verbs.c:5808       
</p>

<p class="MsoNormal" style="margin:0in;font-size:11pt;font-family:Calibri,sans-serif">#2  0x0000000004fc0eeb in
mlx5_devx_cmd_queue_counter_query (dcs=0x31131be2b2c0, clear=clear@entry=0,
out_of_buffers=out_of_buffers@entry=0x7fffa6bae010)</p>

<p class="MsoNormal" style="margin:0in;font-size:11pt;font-family:Calibri,sans-serif">    at
../usbc_gnu_src/drivers/common/mlx5/mlx5_devx_cmds.c:2845</p>

<p class="MsoNormal" style="margin:0in;font-size:11pt;font-family:Calibri,sans-serif">#3  0x00000000052ec96d in mlx5_os_read_dev_stat
(priv=priv@entry=0x31131bf66400, ctr_name=<optimized out>,
ctr_name@entry=0x5b6fcc2 "out_of_buffer",
stat=stat@entry=0x7fffa6bae010)</p>

<p class="MsoNormal" style="margin:0in;font-size:11pt;font-family:Calibri,sans-serif">    at
../usbc_gnu_src/drivers/net/mlx5/linux/mlx5_os.c:2684</p>

<p class="MsoNormal" style="margin:0in;font-size:11pt;font-family:Calibri,sans-serif">#4  0x00000000053719e4 in mlx5_stats_get
(dev=<optimized out>, stats=0x7fffa6bae690) at
../usbc_gnu_src/drivers/net/mlx5/mlx5_stats.c:155</p>

<p class="MsoNormal" style="margin:0in;font-size:11pt;font-family:Calibri,sans-serif">#5  0x0000000005076873 in rte_eth_stats_get () at
../usbc_gnu_src/lib/ethdev/rte_ethdev.c:2733</p>

<p class="MsoNormal" style="margin:0in;font-size:11pt;font-family:Calibri,sans-serif"><span style="font-size:11pt"> </span><br></p>

<p class="MsoNormal" style="margin:0in;font-size:11pt;font-family:Calibri,sans-serif"><span style="font-size:11pt">BR</span></p>

<p class="MsoNormal" style="margin:0in;font-size:11pt;font-family:Calibri,sans-serif">Narsimha</p></div>